Right-Click Burn file to disc bug

When I select more than one folder and then right click burn file to disc I get a message folder already exists and then everything is blank in the PA burner. When I right-click a single folder and then burn file to disc the folder directly off the root of disc that I right-clicked is blank in the PA burner but all other files and subfolders are visible. I’m using Windows 7 64-bit with PowerArchiver 2011 RC3.